Cable on-line state monitoring device

The utility model discloses a cable on-line state monitoring device which comprises a rotating frame, arc-shaped plates are rotatably connected to the two sides of the interior of the rotating frame, warning lamps are fixedly installed below the outer surfaces of the arc-shaped plates, and sliding rods are slidably connected to the upper portions and the lower portions of the outer surfaces of the arc-shaped plates through openings. One end of the sliding rod is provided with a monitoring mechanism, and the other end of the sliding rod is fixedly connected with a semicircular plate. According to the cable on-line state monitoring device, two first threaded rods are rotated at the same time, so that two pushing and pressing plates move towards the middle, the pushing and pressing plates extrude sliding rods to move towards the middle, the multiple sliding rods move towards the middle at the same time, the multiple monitoring mechanisms move towards the middle to make contact with a cable, and through multiple